Clarke (second from left) was fined for his part in a clash with Anderson (right)

Clarke was also fined 20% of his match fee in November 2013 for using an obscenity while warning England bowler James Anderson to expect a broken arm as Australia won the first Test down under on the way to a 5-0 series victory.

"I'm confident the Ashes will be played in the right spirit. Both teams will play hard," said Clarke.

"We respect that there's a line you can't cross. Both teams might head-butt that line but I'm confident we won't overstep the mark.

"As captain, I'll make sure I'm leading the way on that front and I'm confident the boys will follow."

BBC Sport cricket correspondent Jonathan Agnew:

"It's important that Paul Farbrace continues to have an influence for England. He will be replaced as head coach by Trevor Bayliss for the Ashes, but he has done a brilliant job in his interim reign."The first match in Cardiff is very important. England can't afford lose that first Test. They will have to play at the top of their game to beat Australia, but I don't think anyone would write them off."Read more here

There will be live coverage of the Ashes on Test Match Special, and comprehensive coverage on the BBC Sport website which will include live text commentary on each day of the Test series.